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Jobisdone [24]
2 years ago
6

Ryan has a collection of 1,200 pennies.

Mathematics
1 answer:
Allushta [10]2 years ago
6 0

Answer:

480 Pennies.

Step-by-step explanation:

25% (1980) + 35% (1980-2000) = 60%

40% (2000+) Percent of 1200 is 480 Pennies.

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On field trips there must be 2 chaperones for every 15 students which ratio correctly express the ratio of students
fredd [130]

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Step-by-step explanation:

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5 0
3 years ago
Alistar is going to build fence around the outside of his garden
PolarNik [594]

Answer:

32+\sqrt{200}

Step-by-step explanation:

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7 0
3 years ago
The number of bacteria in culture grows 80% each hour. Suppose. There are 250 bacteria in the original culture.
Flauer [41]

Answer:  (a) y = 250(1.8)ˣ     (b) 89,262 bacteria

<u>Step-by-step explanation:</u>

Use the exponential growth formula   y = a(b)ˣ     where

  • a = Initial Value
  • b = 1 + r  (for growth) or 1 - r for decay
  • r = rate (convert percent to a decimal)

a)    Given: a = 250,    r = 80% (.80) → b = 1.8

       y = 250(1.8)ˣ

b)  Given: x = 10

     y = 250(1.8)¹⁰

     y = 89,261.68   =  89,262 (rounded to the nearest whole number)

4 0
3 years ago
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